Ttjrntable-dbiving appabattjs



Feb. 12', 1.929.

R. w. YOUNG TURNTABLE DRn/ING APPARATUS Filed Aug. 2o, 19'26 4 Sheets-Sheet l Feb. 12,1929. l 1,701,938

R. VLYOUNG TURNTABLE DRIVING APPARATUS Filed Aug. 2o, 192s, 4 sheets-sheet 2 innen/Lo 7':

A l j@ Feb.0 12, 1929.

R. w. YQUNG TURNTABLE DRIVING APPARATUS Filed Aug. 2o, 192e 4 sheets-sheet 5 I R. w. YOUNG -TRNTABL DRIVING APPARTUS Feb. 12, 19215. l 1,701,938

rma Aug. 2o, 192e 4 sheets-sheet 4 lll Patented omTeo STATES Feb. 12', illt,

ROBERT W. YOUNG, OF WILMET'IE, ILLINOIS.

TURNTABLEeDRIVING APPARATUS.

Application led August 20, 1926. Serial No. 130,398.

1 rllhe invention disclosed herein relates to railway turntable construction and inore partieularly to a type oit construction adapted for use in turntables receiving heavy load- 5 ings. lVhile the invention is peeuliarly adapted for a three-point or unbalanced'oenter bearing' turntable Construct-ion, it Will be `ob vious that it is applicable :to other types of turntables, such as the single span type without center or to the center balanced type for converting` the latter to a three-point bearing' type. l

Railway rollingstock has been and is ever increasing in Weight and this fact has'inade it increasingly diilieult to utilize the. center Vln-iaring balanced type. rlhe Continuous three-point bearing type and the si nle span type Without center are there-tore comin more and inore into general use. .Re rtlless ot the type of turntable it is desirable that it be so mountedon the truelis on in other Words, so connected to the trucks that the vtrucks inay swing7 pivot or give to some extent with respect to the girders so as to maintain the Wheels of the truck, Whether driven or simple idling; wheels, in Contact with the turntable track or rail at all times. It is ivell known that the average pit rail or track a turntable is uneven and Whether the turntable be ot the center balanced type or not, if its truel; be secured rigidly or inl'lexibly thereto, thestrain upon the center bearing, girders and other vital structural parts oi he turntable is tremendous when heavy rolling` stoel; passes thereon and the truclrwheels are not directly supporting the ends oit the gil-ders troni the pit rail, In other Words, should there be a depres n'in the pit rail beneath the Q'jirder having` a ri l ly connected truck, vthe girder will not be supported from the rail When heavy rollingr steek passes on to the table and greatbending' L vl torsional stresses are placed upon the il" Aeers and other portions of the table tendinn' to strain them. l n Y y y Y VV,er ondes r`ble feature of such oonotion is encountered when the truck als tail to contact with the track dueto uneven thedii ineens by which theturnteble is for in thisfcuse. unless the girders lies' su? utly to' eontaet the drivingyvheel Vcircle or pit rail, no traotion Whatthereing itt such truolr Wheels arev provide a traine and journal Acoi i *objects ot iny invern cable to both simple and driven trucks and to provide each truck with an equalizer, such as a pivot or hinge connection to the turntable girder in order that the Wheels of the' (so truck `may adjust themselves to uneven portions of the circle or pit rail, thus furnishing constant traetion Without putting excess strain on the table girders or excess loaden the niotors, which is the case when the trucks on are rigidly attached to the girders. Turntable trucks have been somewhat flexibly connected to turntables before but my invention provides a flexible connection which is in fact flexible and cannot impose torsional or To other strains on the table nieinbers With which it is connected. My invention attains these ends and also greatly simplifies turntable Construction in that I pivotthe truck to the girder on an axis parallel to the plane 7 of the girderV and prefrably in the plane of the girder.' l v Another object is to provide a truck construetionwl'iieh may be applied to any turntable girder end, Whether the turntable be e0 previously installed or not, and one which may either be connected to the turntable gin der directly beneath it for a deep pit, or in noteh formed in the end thereof for shallow pits, or through an opening torn'ied through 8 the 'web of the girder atjacent the end over the pit track in the saine or other instances.

Still another obj eet is to provide a truck arrangement adapted to be constructed either as a simple trucl: or a driventruclr and to arrange the driving;` mechanism on the truck, in ease it is a driven truck7 in such a position and relation to other parts oithe truck and turntable as to inost etliciently and eitectively econoinize space and at the saine time utilize U5 the Weight of the driving ineens including); the prirne mover, to maintain the driving` Wheel ot the truck in Contact Wit-h the pit" rail all times `and regardless of inequa ies therein. A further objcet is to provide a siinple and ellieient pivot or hinge connection betweenv the girder and the triuflc ot such character that substantially one e ot hinge een; eetion Amay be utilized to oliitain various depths ot connection bovfeen the t, ler and truck to lf3 adaptla truck to various tu. itable girders regardless; ot their height above the pit rail.

Astill'turthe, object oythe invention is to truetion oi' traine nay b A ill] li parts,as well as the advanta of my invention, Will be or should become readily appreciated after perusal ofthe following` description and claims taken inconnection with the drawings in which:

Fig. l isa top plan view oi a portion ot one end of a turntable showing a simple and a power driven truclrconnected thereto th rough the ends of the girders.

F101 2 is an end elevation oi the construetion illustrated'in Fig. l looking' radially inward of the turntable.

Fig. 3 is a top plan View oli a power driven truck, taken on the line SMS of Fig. al.

Fig. 4 is a rear elevational view of the powerV driven truck, taken on the line 4--4 oi" Fig. 3.

Fig. 5' is a vertical sectional view through the journals and journalled to frame connecting; members, taken on the line 5 5 ci Fig. 3 and showing the driving Wheel and its axle mounted therein.

Fig'. 6k is a sectional view through a preferred type oiE hinge for connecting the truck frame to the girder, talrenon the line 6 6 ot Fig. 4.

CII

:the truck *frame to a girder.

Fig. .7 is a top planrvfieiv of theidling wheel, its axle and ournal-to-tranie connecting members showing` a portion of the truck Ytrame in section, taken on theline 'THT oi Fig. el,

and

. Fig. 8 is an end elevation of Vone of the hinge members or elements for pivotally connecting?,`

f The girders illustrated are ol the socalled built-up type and may include one or more web plates?. (in the present instance three are shownlwhich are secured together in any suitable manner. `"Angle irons 3., pref- Yerably extending the full length of the webs, f. are connected tlieretoat their tops and bottoins,as is well understood. VThe bridge-type girders illustrated have Awebs oi greater 'height everthe center portions of the table than'attheirends. the top being` tapered down from a point a. suitable distanceon eitli'erside of their centers to theirends adjacent the pit .'Wall. yThe girders are, of course, suitably ir.-

terbraced and connected by membersV 5, 6, 7 and 8 in any desired or preterredmanner an d the turntable frame structure thus orn'ied may or maynot, according` to its type, be

cent the walls of the pit and adapted to serve either as a support for the table end, or as a traction surface for the driving wheel et :L truck or tractor -l'or rotating the turni able. or both as a support for the turntable end and a traction suri'uce for the driviiifr wheel or Wheels.

In the arrangement shown tor simple illus tration of my inifention l have depicted a turntable having` both simple and driven trucks at one end; the simple truck, generally designated 1l, being located at the lett of Figs. l and 2 and the driven truclr, generallydesignated l2, it the right, although it will be understood that both trucks may be simple trucks or even both driven trucks, it for any reason such is desirable. lllhile, as has been intimated above, the trucks may be. connected to the girders in notches cut .in the ends thereoil or in any other desirable inanner, l prefer to cut an opening,- designated l?) through the web of the girder adjacent its` end and between the top and bottom sides thereof through which one end ot the truck frame is disposed. While in the coustiwh tion illustrated, the top oli the ,oiidor conyverges toward the bottom at the ends ol? the girder, the construction is such that the web of the girder may be cut out to provide on Openingot1 suiticient size over or adjacent the circle or pit rail to receive the truck frame and its pivot member therethrough without materially decreasingy its strength. lt will be understood, of course, that the iii-ders will be constructed of suliicicnt strength lo per mit this being done. While all o'lj' the edges of the rectangularopening 13 througih the girder Web may he reinforced with angle irons or other structural elements, l prefer to reinforce only the top edge. For this purpose I utilize angle irons lll which also .serve to secure one portion oi the hingi'e or pivot member ot the truck to the `srirder, :is will he seen.

Referringnow more particularly to Fie-s. 3 and 4, the iframe of the truck is generally designated l5 and is ci such length that it may extend on opposite sides oif the ,ejirllei' to support an idling wheel 16 on one side and a driven wheel 17 on the other. The iti-:nue member l5 is preferably a steel casting', the sides of which are adapted to extend substantially perpendicular to the plane ol' the girder for a short distance on either side of its pivotal connection thereto when in position. From this portion the Yframe extends obliquely away from the girder in order that the Wheels, Whether driven or idling'. may he positioned properly with respect to the turntable track or rail l0. For the driven trucha,

tlll

bfi

lili? the end of the frameextending away from or on the outside of the turntable is made longer than the end extendingL inwardly in order to provide room properly to support the prime mover and other driving mechanism, while for simple trucks the frame preferably extends equally on each side of the girder to which it is attached.

The frame is pivot-ally attached to `the girder on an axis parallel to and adjacent or parallel to and lying in the plane of the web of the girder and for this purpose an upper hinge member comprising a plate 18 having a vseries of depending arms 19 (see Fig. 6),V

each drilled to receive a hinge pin 21, is secured to the angle members 14 attached to the web of the girder by means of bolts 22 and nuts 28 which are passed through bolt holes 2O drilled through the plate 18 and registering holes (not shown) in the angles 14. Shims 24fmay be interposed between the plate 18 and the bottoms of the angle members 14 for adjustment, if desired, but the primary adjustment of the hinge and thus the truck is secured through the depending arms 19, as will be hereinafter described. The frame at the place whereit is to be hinged to the girder is provided with a series of integral Vwebs 25, veach having a head 26 adapted to' `fit between the arms 19 and to vbe drilled in t-he samemanner as the arms 19 to receive the hinge pin 21. The arms 19 are preferably of such length that they may be drilled on any one of a plurality of centers, as indicated in dotted lines in Fig. 8, to secure a primary adjustment for various heights of the girder openings above the turntable track or circle rail. In other words the frame may be pivotally connected to the plate and thus tothe girder at various vertical distances therefrom. If further adjustment is needed it is secured byy the use of shims 24, as will be understood.

. Thehinge or pivot pins 21 are preferably secured to the frame member and I prefer 'to accomplish this by drilling and tapping a hole located partially in the pin and partially in one ofthe heads 26 for the reception of a screw key v27 as shown in Fig. 4, but this end may be attained lin other ways. Since the pin is secured against rotation `relative to theframc of the truck it is only necessary to lubricate its points of bearing inthe arms of the upper hinge member 18. I have shown one conventional method of accomplishing this purpose in Fig. 6` wherein the pin 21 is shown in dotted lines as drilled axially, as at 28, and/radially, as at 29, to provide oil or grease ducts. An opening for supplying the ducts'with lubricant 'is provided in one end of the pin and adapted to be normally closed by a plug 31, butother means of lubrieating this hinge or pivot pin may be providcd, as will be understood.

The wheels of the simple trucks are prefer-- ably mounted in substantially the same manner as theidling wheel 16 of a driven truck Vand for that reason a description of the-latter should suffice for all. The frame at both ends is recessed on the bottom side, as shown at 32 and 33, to provide clearance for the idling and driving wheels 16 and 17, respcctively, and is also preferab-lyrecessed, as at `34 and 85, for lightness and to adapt the Adjacent veach seat 38 aligned shoulders 42 are provided on the frame and preferably extend substantially transversely of the arms 36 and 37 to abut and position the-journal members 39 and 41 through their edges 43 which are machined to lie in alignment with one another. The shoulders 42 preferably occupy the same directional relationship to all frames regardless of the radius length of the turntable to which the frames are applied. but since it is desirable to' have the axes of the axles of the wheels and therefore'the axes of the journal boxes, whether for simple or driven trucks, lie parallel. to a radius of the turntable, the edges or shoulders 43 of the journal connectingor supporting members are milledoif at such angular relation with respect to the axis ofthe journals or axles as will dispose the axis of the journal or axle parallel a radius of the particular turntable to which the journal supporting members are applied when the shoulders 43 abut the shoulders 42. The journal supporting members are connected to the frame by means of bolts 44, although they may bc connected otherwise, as desired.

In Fig. 5I haveshown in cross'section a preferred arrangement and construction for the driving wheel mounting. As shown the driving wheel 17 is keyed or otherwise secured on its axle 45 which is'reduced, as at 46 and 47, for mounting in journal boxes 48 and 49 respectively, and extended and further-reduced. as at 51, for the reception .of a gear 52 which is keyed thereon. The journal boxes 48 and 49 are of similar construction, each embodying cupped members 53 `within which roller bearings 54 are mounted in their races and closure caps 55 and 56 respect1vely.:,The cap 55 servesbotli as a closure for they bearing and as a thrust member for the axle 46, while the closurcmember 56 is of slightly different construction in that itis provided with an opening through which the extension end of the axle projects and has a thrust washer 57 abutting between the inner face of the member 56 and the shoulder formed bythe reduced portion 5l of the axle serving to absorb the thrust imparted tothe axle to the right in Fig.v 5. Each of the closure members 55 and 56 is Vsecured to its respective cup member 53 by means of bolts .58 and 59, While the cast steel frame member,

by reason of therecess 35, forms arms 6l and 62 which are secured to the journal members through bolts 63 in substantially the same -manner as the journal members 4l are conneeted to theY frame arms 86Y and 3?. The framek arms 6l and 62 are also. provided with shoulders 6d cooperative with the Journals ,4L-8 and i9 in the same manner and for the same. purpose as the shoulders il-2 cooperate with the shoulders e3.

The driving mechanism for the driving wheel lrpreferably comprises a suitaole electric motor 65 mounted on legs 66 secured by bolts 67 to the flanged sides to the top of the frame,a gear 68 carried by the shaft of the motor for driving engagement with a large yreducing gear 6,9 mounted in journals Z2 sei cured on the arms 6l and v62 of the frame 15, and a gear 73 secured ont-he opposite end of `shaft 71 for driving'engagement with gear 52 secured on the end 5l of shaft The motor 65, as will be noted, is mounted between a vertical projection of the-anis of shaft 45 and the plane of the web of the girder, since A this arrangement, from engineering and commercial standpoints, has been found to be most efliciently effective and satisfactory.v

The motory controller maybe suitably arranged from any cab mountedon the turntableor from other places of remote control andV per se forms no part of the present invention. The power mechanism is preferably vequipped with'a braking mechanism of any Vpedall in the operators cab, as will be understood. Y n v itis believed that from the foregoing'descriptfsion and statement the preferred construction and arrangement of parts of my invention, as well as the advantages andnovclvties thereof, will be appreciated, but as radical departure from the specific arrangement and forn'r'of vthe Vembodiment of the invention,

.shown and described for illustrative puriose'sfonlT ma be made without de artine 7 t b from the purview of the invention, I desire to 'be limited only by the spirit thereof and the scope of the appended claims. lclaim:V

1. In a turntable, a pitrail, a girdcr havin ,fr a recess formed therein adjacent the pit rail, a member extending through said recess, a single pivot having an axis parallel to the plane of the girder for securing said member to said girder for swinging movement with respect thereto, said member being otherwise unconnected to said girder, and a wheel mounted on said member for rolling on said pit rail.

2. ln a turntable, a girdor, a trucl: frame member, a horizontal pivot connection the axis of which is parallel to the plane of thel girder between said member und girdcr, said member and girder being otherwise unconnected, and a truck wheel rotatably supported by said member.

3. In a turntable, a girdcr, a truck frame member extending transversely of said girder and pivoted thereto between its ends on an axis parallel to the plane of the girdcr, said member andv girder being otherwise unconnected, and a truclr wheel rotatably mounted on said member on each side of said girder.

i. ln 'urntaliile, a girder, a truck frame member extending transversely of said girder and pivoted thereto between its ends on an axis parallel to the plane of the girder, said member and girder being otherwise unconnected, and a truck wheel rotatably mounted on said member on each side of said girder, the axes of said wheels lying substantially along radii of the turntable.

5. ln a turntable, a girder, a truck frame member extending transversely of said girder and pivoted thereto between its ends on au axis parallel to the plane of the girder, said member and girder being otherwise unconnected, a truck wheel rotatably mounted on said member on each side of .said girder, and driving means for rotating one of said wheels.

6. ln a turntable, a girder, a truclr frame member extending transversely of said girder and pivoted thereto between its ends ou an axis parallel to the plane of the girder.y said member and girder being otherwise unconnected, a truck wheel rotatably mounted on said member on each side of said girdcr, and driving means for rotating one of said wheels, the axes of said wheels lying substantially along radii of the turntable.

T. In a'turntable, a girder adaptiul to ofi;- tend across a turntable pit substautiallliy purallel to a radius of the pit, said girder haring a recess in one end, and a truck member disposed through said recess and connected to said girder solely by a single pivot member.

8. In a turntable, a girder adapted to er tend across a turntable pit substantially pai'- allel to a radius of the pit, said girder having a recess in one end, and a truclr .member disposed through said recess and coin nected to said girder solely by a, hin e.

9; In a turntable, a girder adapt to extend substantially parallel with :i radios of till lll() Hill a turntable pit, a truck member extending substantially transversely of and across said girder, and a relatively free swinging hinge connecting said member to said girder.

10. In combination with a turntable supporting girder having one end adaptedto extend adjacent a pit rail, means connected by a pin and eye hinge tosaid girder adjacent said end for relative Vand substantial-` 1y free swinging movement with respect thereto about an axis parallel with the plane by said means on an axis substantially radial of thevturntable pit for running on the pit rail.y i j 12. In combination with a turntable supporting girder having one end adapted toV extend adjacent a pit track, a truck trame member, and a hinge pivotally connecting said member to said girder at said end on an axis oblique to a radius of the turntable intersecting said girder'at said end, for supporting the girder from said pit track, said hinge forming the sole connection between said member and girder. i

18. In combination, a turntable pit having a pit rail, a turntable including a girder within said pit and `extending thereacross, the ends of the girder extending into proximity to said rail, a truck member pivotally connected to one end of said girder on an axis oblique to a radius ofsaid pit rail for relatively extreme and unlimited tilting movements relative to said girder, and a truck wheel rotatably secured to said member for supporting the same from said pit rail.

14. In a turntable, a girder end adapted to extend adjacent a pit rail, and a support for said end comprising a wheeled truck having a single non-distorting and flexible connection to said girder, disposed beneath a portion of said girder end, said truck being otherwise unconnected to said girder.

15. In a turntable, a girder and a support for said girder comprising a truck member having al single connection to the girder, said connection being liexible without distortion, said truck member being otherwise unconnected to said girder.

16. In a turntable of the continuous girder type, a pair of girder-s suitably interconnected, andV extending on either side of a diameter of the turntable, a supporting truck for each of the ends ont one of said girders, and a singleconnection between each truck and the adjacent girder end, said connection being flexible without distortion.

17. In a turntable construction, atruck frame member, a bearing member connected to said trame member adjacent one end thereof, a wheel journalled in said bearing meinber with its axis of rotation transverse to the-length ot the frame member, and a hinge element havingan opening for reception ot a hinge pin, connected to said trame inember between the axis of the wheel and the opposite end ot' said frame member.

18. A truck for supporting an end of a turntable girder comprisin ,a frame member adapted to be disposed'su stantially transverse to the plane of the girder, a wheel rotatably connected to said member adjacent one thereof for running on a pit rail, and means providing a hinge for connecting said member to the girder for swinging movements with respect thereto on a horizontal axis parallel to the plane 0I' the girder.

19. In combination with a turntable supporting girder having an end adapted to extend into proximity to a table pit rail, a truck member connected to and extending transversely across the end ot' said girder for supporting' the' same, a pair of driving wheels for supporting and driving said truck from said rail, said wheels being disposed on op posite sides of said girder and a prime mover disposed intermediate one of said wheels and girder and operatively connected to one of said wheels for driving the same.

20. In combination with a turntable supporting girder having one end adapted to extend adjacent a pit track, a wheel carrying member disposed transversely of and connected intermediate its ends to the said end of said girder, a driving wheel carried by said member adjacent one end thereof for running on the pit track, and a prime mover carried by said member intermediate the axis of said wheel and the connection of said member to said girder ,for driving said wheel.

21. In combination with a turntable supporting girder having one end adapted to extend adjacent a pit track, a wheel carrying member disposed transversely of and connected intermediate its ends to the said end of said girder, a driving wheel carried by said member adjacent one end thereof for running on the pit track, a prime mover carried by said member intermediate the axis of said wheel and the connection of said member to said girder for driving said wheel, and gearing supported by said member between the axis of said wheel and the adjacent end of said member for connecting said prime mover and wheel. j

22. In combination with a turntable supporting` girder having one end adapted to extend adjacent a pit track, a wheel supporting member disposed transversely of and connectedintermediate its ends to the said end of said girder, a driving wheel rotatably supported by said Vmember adjacent one end thereof and adapted to run on the pit track, a prime mover disposed between the last said end of said member and said girder for driv ing said wheel, and a pivot connection between said member and said girder.V

23. In combination with a turntable supporting girder having one end adapted to ezitend adjacent a pit'traclt, a wheel carrying` member disposed transversely of and con nected intermediate its ends lto the said end et said girder, .a driving wheel carried by said member Vadjacent one end thereof lor running on the pit track, a prime mover carried by said member intermediate the axis et' said wheel and the connection oit said membe tov nected intermediate itsendsv to the said end of said girder, adrivingvvheel carried by said member adjacent one end thereof for running on the pit track, a prime mover carried by said member intermediate the axis oiE said wheel and theV connection of said member to said girder for driving said wheel, gearing j supported by said member between the axis ol` i said wheel and the adjacent end of said member for connecting said prime mover and wheel, and a pivot connection between said member and said' girder.

25. In combination with a turntable supporting girder having one end adapted to extend adjacent a pittraclz, a wheel supportingl member disposed transversely oi' and conn .nected to the saidend of said girder, a drivsupported by said member in spaced relation tosaid driving wheel, and a prime mover disposed between the last said end of said member and said girder and between said wheels for driving said driving wheel.

26. In combination with a turntable supporting `gz'irder having one end adapted to extend adjacent a pit track, a wheel carrying member disposed ltransversely of 'and connected to the said end oi' said girder, z` driving wheel carried by sain member adjacent one end thereof and at one side of said girder for running on Athe pit track, a second wheel mounted on said member on the opposite side of said girder, and a vprime mover carried by said rmember intermediate the axis of said driving wheel kand the connection oi said member toj said -girder and between said wheels on the are of said track for driving said wheel.

27. In a device as set forth in claim 26 the combination of gearing` supported by said member between the axis of said 'liiviiigsr wheel and the adjacent end of said member for connecting said prime mover and driving wheel.

28. In combination with a turntable supporting` girder having one end adapted to extend adjacent a pit track, a wheel supporting member disposed transversely et and connected to the said end of said gird er, a driving wheel rotatably supported by said member adjacent one end thereoi and adapted to run on the pit t 1ack, a prime mover disposed. between the last said end oit said men'iber and said girder 'for driving` said wheel, and a pivot connection between said member and said girder.

29. In combination with a turntable sup` porting* girder having one end adapted to evk tend adjacent a pit track, a wheel carrying member disposed transversely et and connected to the said end oil. said girder, a driving wheel carried by said member adjacent one end thereofA for running` ou the pit track, a prime mover carried by said member intermediate the axis et said wheel and. the councetion of said member to said girdei' ior driv ing said wheel, and a pivot connection be tween said member and said girder.

30. In combination with a turntable sup porting girder having one end adapted to extend adjacent a pit track, a wheel carrying member disposed transversely ot and connected to the said end oi' said girder, a drivingr wheel carried by said member adjacent one end thereof for running on the pit track, a prime mover carried by said member intermediate the axis oi said wheel and the connection oi said member to said girder for driving,- said wheel, gearing supported by said member between the axis ot said wheel and the adjacent end et said member tor connecting said prime mover and wheel. and a pivot connection between said mcmbe1 and said girder.

3l. In a turntable construction o'l the character described, a hinge element havingl a project-ion of suliicient length to be provided with any one of a series of transverse openings for the reception of binge pin thorethrough, and means for securing` said element to one of two relatively swinging devices.

32. In combination with a turntable girder member and a truck member, a hinge element forming` part oi' a l'iingg'e for connecting the truck to the girder comprising', means ior securing said element to one of said members and means of sui'iicient area to have any one of a series of openings provided therethrough for reception of a hinge pin at a selected distance from said securing; means.

33. In combination with a structural eletitl lid

ment of a turntable, means for piyotally connecting a truck thereto comprising a hinge element having an arm portion, said portion being oi an area suilicient to adapt it to be provided with-a-hinge pin receiving recess at any one of a plurality of locations over said area.

v 34e. In combination with a first structural element or a turntable, means for pivotally connecting a second structural element thereto comprising a hinge member having a substantially flat base adapted to be removably secured to the lirst structural element, and a pair of substantially parallel spaced arms projecting transversely from said base in the same direction.

35. In combination with a iirst structural element of a turntable, means for pivotally connecting a second structural element thereto comprising a hinge member having a base adapted to be secured to the first structural element, anda pair of substantially parallel spaced arms projecting from said base in the samedirection, said arms each being of sutucient area in the the planes of their parallelism to adapt each of them to be provided with a hinge pin receiving recess at any one of a plurality oi' places over its said area.

36. Ina turntable, a girder end adapted to extend adjacent a pit rail and having an opening therethrough spaced from said end and intermediate the top and bottom of the girder, and a truck frame member disposed through said openings and pivotally conf nected to said girder adjacent said opening,

said frame member-being otherwise unconnected to said girder.

37. In a turntable truck, a frame member having a portion adapted to be disposed substantially tangentially of a circle concentric with the center of the turntable, and a seat on said frame member having a shoulder adapted to abut against a portion of and position a journal member for a wheel axle so that the axis of the axle will be disposed radially of said turntablecenter.

38. In a turntable truck, a frame member having a portion forming a journal connecting member seat, and a rib projecting adjacent said seat, said rib having a planed suriace providing an abutment for a portion of each oi a plurality ot journal connecting members adapted to be attached to said seat to align the axis of each journal with a radius oi a turntable.

39. In a turntable truck, a frame adapted detachablv to engage a pair of axially aligned wheel axle journal supporting members carrying journals, and means for aligning the axes of said journals with a radius of the turntable including a projection on said frame providing a shoulder adapted to engage a corresponding shoulderr on one of said sup- Y porting members.

40. In combination with a structure as defined in claim 39, said projection being adapted to position a plurality of journal supporting members each having a shoulder adapted to engage the said shoulder on the trame for interchanging the journal supporting members for turntable tracks ot different radii. j

41. In a turntable truck, a frame member and means for connecting corresponding wheel axle journals to said trame to have their axes parallel to turntable radii of various lengths comprising, a seat on said trame member against which said supporting member may be secured, a shoulder extending at a fixed angle with respect to a turntable radius adjacent said seat, and journal supporting members each having a portion adapted to be machined to such angle with respect to the axis of its journal as to provide a shoulder cooperative with the shoulder on said trame member to dispose the axis of its corresponding journal parallel with a turntable of predetermined radius.

42. In a turntable driving truck, a unitary 'trame comprising substantially central portion adapted to be disposed parallel to a tangent to the turntable circumference, integral end portions connected to and extending obliquely away froml said central portion, each end portion lying substantially parallel to other tangente to the turntable circumference, and a plurality of parallel hinge elements secured to said central portion.

43. In a turntable driving truclr, a frame comprising a substantially central portion adapted to be connected to a turntable girder andto be disposed substantially parallel to a tangent to the `turntable circumference, end portions connected to and extending obliquely away in opposite directions from said central portion, and means for connecting said portions to the turntable girder comprising a plurality oi? parallel webs on said central portion, said webs lying in vertical planes substantially parallel to the lirst said tangent.

44. In a turntable driving truck, a trame comprising a substantially central. portion adapted to be connected to a turntable girder and to be disposed substantially parallel to a tangent to the turntable circumference at its connection to the girder, end portions connected to and extending obliquely away in opposite directions from said central portion and each disposed substantially parallel to Vother tangents to the turntable circumference, and means for pivotally securing said 'frame Ato a turntable girder.

In witness ot the foregoing I aiix my signature. I

ROBERT IV. YOUNG. 

